1 files changed, 19 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/spec/functions/grep_spec.rb b/puppet/modules/stdlib/spec/functions/grep_spec.rb
new file mode 100755
index 00000000..9c671dd8
--- /dev/null
+++ b/puppet/modules/stdlib/spec/functions/grep_spec.rb
@@ -0,0 +1,19 @@
+#! /usr/bin/env ruby -S rspec
+require 'spec_helper'
+
+describe "the grep function" do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  it "should exist" do
+    expect(Puppet::Parser::Functions.function("grep")).to eq("function_grep")
+  end
+
+  it "should raise a ParseError if there is less than 1 arguments" do
+    expect { scope.function_grep([]) }.to( raise_error(Puppet::ParseError))
+  end
+
+  it "should grep contents from an array" do
+    result = scope.function_grep([["aaabbb","bbbccc","dddeee"], "bbb"])
+    expect(result).to(eq(["aaabbb","bbbccc"]))
+  end
+end